<!DOCTYPE html>
<html lang="en">
<head>
  <meta charset="UTF-8">
  <meta name="viewport" content="width=device-width, initial-scale=1.0">
  <title>Document</title>
</head>
<body>
  <button id="btn">请求数据</button>
  <ul id="ul"></ul>

  <script>
    let btn = document.getElementById('btn')
    let ul = document.getElementById('ul')

    // ajax
    function getData(url) {
        return new Promise((resolve,reject) => {
            let xhr = new XMLHttpRequest();
            xhr.open('GET', url, true)
            xhr.send();
            xhr.onreadystatechange = function () {
                if (xhr.readyState === 4 && xhr.status === 200) {
                    resolve(xhr.responseText);
                }
            }
        })

    }

    function renderLi(arr) {
      arr.forEach(item => {
        let li = document.createElement('li');
        li.innerText = item.nm
        ul.appendChild(li);
      });
    }
   
    btn.addEventListener("click", () => {
    //   getData('https://mock.mengxuegu.com/mock/65a91543c4cd67421b34c898/movie/movieList')
    //   .then((res)=>{
    //     console.log(JSON.parse(res));
    //     renderLi(JSON.parse(res).movieList)
    //   })
    })
  

    fetch('https://mock.mengxuegu.com/mock/65a91543c4cd67421b34c898/movie/movieList')
    .then(data =>{
        return data.json()
    })
    .then(res =>{
        console.log(res);
    })
  </script>

</body>
</html>